Upper intake plenum
I'm a newb at upgrading. I have a stock 2007 4.0, and I've been doing some research on some mods that won't cause me to take out a second mortgage. So far, I've come up with:
CAI with tuner
Cat-back exhaust and headers
70mm throttle body and plenum
So far, I've found all these items, except for a plenum. NO one seems to carry them for the 4.0. Anyone have some info on this?